This OEM BCM5751 NIC card is a 10/100/1000Mbps, 32-bit 33/66 MHz PCI-E bus Gigabit Ethernet adapter. With single UTP/STP and the Auto-Negotiation (Nway) function support, the Card can auto-negotiate 10Mbps, 100Mbps or 1000Mbps speed, and half or full duplex mode. Supports ACPI, compliant with PCI 2.2.